经过进一步研究，我发现Windows经典主题使用WindowBrushKey而不是ControlBrushKey。因此，这可以解决Aero和Classic主题的问题：

After further research, I discovered that the Windows Classic theme uses WindowBrushKey instead of ControlBrushKey. Therefore, this fixes the issue for both Aero and Classic themes:

<Style TargetType="{x:Type ListBox}">
    <Style.Resources>
        <SolidColorBrush x:Key="{x:Static SystemColors.ControlBrushKey}" Color="Transparent"/>
        <SolidColorBrush x:Key="{x:Static SystemColors.WindowBrushKey}" Color="Transparent"/>
    </Style.Resources>